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<?php
/* written by steweb57 & Rexy */

/********************
* TEST CONF FILES   *
*********************/
//define ("ALCASAR_CHILLI", "/etc/chilli.conf");
define ("CONF_FILE", "/usr/local/etc/alcasar.conf");
define ("ETHERS_FILE", "/usr/local/etc/alcasar-ethers");
$conf_files=array(CONF_FILE,ETHERS_FILE);
foreach ($conf_files as $file){
if (!file_exists($file)){
        exit("Requested file ".$file." isn't present");}
if (!is_readable($file)){
        exit("Can't read the file ".$file);}
}

# Choice of language
$Language = 'en';
if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])){
        $Langue         = explode(",",$_SERVER['HTTP_ACCEPT_LANGUAGE']);
        $Language       = strtolower(substr(chop($Langue[0]),0,2)); }
if($Language == 'fr'){
        $l_network_title        = "Configuration réseau";
        $l_extif_legend         = " (Interface connectée à Internet)";
        $l_intif_legend         = " (Réseau de consultation)";
        $l_internet_legend      = "INTERNET";
        $l_ip_adr                       = "Adresse IP";
        $l_ip_mask                      = "Masque";
        $l_ip_router            = "Passerelle";
        $l_ip_public            = "Adresse IP publique";
        $l_ip_dns1                      = "DNS1";
        $l_ip_dns2                      = "DNS2";
        $l_dhcp_title           = "Service DHCP";
        $l_dhcp_state           = "Mode actuel";
        $l_DHCP_on              = "actif";
        $l_DHCP_off             = "inactif";
        $l_DHCP_off_explain     = "! Avant d'arrêter le serveur DHCP, vous devez renseigner les paramètres d'un serveur externe (cf. documentation).";
        $l_static_dhcp_title    = "Réservation d'adresses IP statiques";
        $l_mac_address          = "Adresse MAC";
        $l_ip_address           = "Adresse IP";
        $l_mac_del                      = "Supprimer de la liste";
        $l_add_to_list          = "Ajouter";
        $l_apply                        = "Appliquer les changements";

} else {
        $l_network_title        = "Network configuration";
        $l_extif_legend         = " (Internet connected interface)";
        $l_intif_legend         = " (Private network)";
        $l_internet_legend      = "INTERNET";
        $l_ip_adr                       = "IP Address";
        $l_ip_mask                      = "Mask";
        $l_ip_router            = "Gateway";
        $l_ip_public            = "Public IP address";
        $l_ip_dns1                      = "DNS1 :";
        $l_ip_dns2                      = "DNS2";
        $l_dhcp_title           = "DHCP service";
        $l_dhcp_state           = "Current mode";
        $l_DHCP_on              = "enabled";
        $l_DHCP_off             = "disabled";
        $l_DHCP_off_explain     = "! Before disabling the DHCP server, you must write the extern DHCP parameters in the config file (see Documentation)";
        $l_static_dhcp_title    = "Static IP addresses reservation";
        $l_mac_address          = "MAC Address";
        $l_ip_address           = "IP Address";
        $l_mac_del                      = "Delete from list";
        $l_add_to_list          = "Add";
        $l_apply                        = "Apply changes";
}
if (isset($_POST['choix'])){$choix=$_POST['choix'];} else {$choix="";}
switch ($choix)
{
case 'DHCP_On' :
        exec ("sudo /usr/local/sbin/alcasar-dhcp.sh -on");
        break;
case 'DHCP_Off' :
        exec ("sudo /usr/local/sbin/alcasar-dhcp.sh -off");
        break;
case 'new_mac' :
        if ((trim($_POST['add_mac']) != "") and (trim($_POST['add_ip']) != ""))
                {
                $tab=file(ETHERS_FILE);
                $insert="True";
                if ($tab)  # le fichier n'est pas vide
                        {
                        foreach ($tab as $line)  # verify that MAC or IP addresses doesn't exist
                                {
                                $field=explode(" ", $line);
                                $mac_addr=trim($field[0]);$ip_addr=trim($field[1]);
                                if (strcasecmp(trim($_POST['add_mac']),trim($mac_addr)) == 0)
                                        {
                                        $insert="False";
                                        break;
                                        }
                                if (strcasecmp(trim($_POST['add_ip']), trim($ip_addr)) == 0)
                                        {
                                        $insert="False";
                                        break;
                                        }
                                }
                        }
                if ($insert == "True") 
                        {
                        $line = trim($_POST['add_mac']) . " " . trim($_POST['add_ip']) . "\n";
                        $pointeur=fopen(ETHERS_FILE,"a");
                        fwrite ($pointeur, $line);
                        fclose ($pointeur);
                        exec ("/usr/bin/systemctl reload chilli");
                        }
                }
        break;
case 'del_mac' :
        $tab=file(ETHERS_FILE);
        if ($tab)
                {
                $pointeur=fopen(ETHERS_FILE,"w+");
                foreach ($tab as $line)
                        {
                        $field=explode(" ", $line);
                        $mac_addr=trim($field[0]);
                        $remove_line = False;
                        foreach ($_POST as $key => $value)
                                {
                                if ($mac_addr == $key)
                                        {
                                        $remove_line = True;
                                        break;
                                        }
                                }
                        if (! $remove_line) {fwrite($pointeur,$line);}
                        }
                fclose($pointeur);
                exec ("sudo /usr/bin/systemctl reload chilli");
                }
        break;
}

// Fonction de test de connectivité internet
function internetTest(){
        $host = "www.google.fr"; # Google Test
        $port = "80";
        //var $num;     //non utilisé
        //var $error;   //non utilisé
        
        if (! $sock = @fsockopen($host, $port, $num, $error, 5)) {
                return false;
        } else {
                fclose($sock);
                return true;
        }
}
/********************************************************
*               Lecture du fichier ALCASAR_CHILLI       *
*                    (not need any more)                *
*********************************************************/
//$ouvre=fopen(ALCASAR_CHILLI,"r");
//if ($ouvre){
//      while (!feof ($ouvre))
//      {
//              $tampon = fgets($ouvre, 4096);
//              if (strpos($tampon,"=")!==false){
//                      $tmp = explode("=",$tampon);
//                      $chilli[$tmp[0]] = $tmp[1];
//              }
//      }
//}else{
//      exit("Erreur d'ouverture du fichier ".ALCASAR_CHILLI);
//}
//fclose($ouvre);

/***********************************
*       Read ALCASAR_CONF_FILE     *
************************************/
$ouvre=fopen(CONF_FILE,"r");
if ($ouvre){
        while (!feof ($ouvre))
        {
                $tampon = fgets($ouvre, 4096);
                if (strpos($tampon,"=")!==false){
                        $tmp = explode("=",$tampon);
                        $conf[$tmp[0]] = $tmp[1];
                }
        }
}else{
        exit("Erreur d'ouverture du fichier ".CONF_FILE);
}
fclose($ouvre);

/************************
*       TO DO           *
*************************/
//modification de la conf réseau  --> V3.0

?><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><!-- written by steweb57 & rexy -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title><?php echo $l_network_title; ?></title>
<link rel="stylesheet" href="/css/style.css" type="text/css">
<script type="text/javascript">
function MAC_Control(formulaire){
/*MAC control (upper case and '-' separator*/
        var regex1 = /^([0-9a-fA-F]{2}(-|:)){5}[0-9a-fA-F]{2}$/; //vérification adresse mac
        if (regex1.test(document.forms[formulaire].add_mac.value)){
                document.forms[formulaire].add_mac.value=document.forms[formulaire].add_mac.value.toUpperCase().replace(/:/g, '-');
                return true;
        } else {
                alert("Invalid MAC address");//non internationnalisé
                return false;
        }
}
</script>
</head>
<body>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
        <tr><th><?php echo $l_network_title; ?></th></tr>
        <tr bgcolor="#FFCC66"><td><img src="/images/pix.gif" width="1" height="2"></td></tr>
</table>
<TABLE width="100%" border=1 cellspacing=0 cellpadding=1>
        <tr><td valign="middle" align="left">
        <fieldset>
        <legend><?php echo $l_internet_legend;
        if (InternetTest()){
                echo " <img src='/images/state_ok.gif'>";
                $IP_PUB = exec ("wget http://checkip.dyndns.org/ -O - -o /dev/null | cut -d: -f 2 | cut -d\< -f 1");}
        else    {
                echo " <img src='/images/state_error.gif'>";
                $IP_PUB = "-.-.-.-";}
        ?></legend>
        <table>
                <tr><td><?php echo $l_ip_public." : </td><td>".$IP_PUB;?></td></tr>
                <tr><td><?php echo $l_ip_dns1." : </td><td>".$conf["DNS1"];?></td></tr>
                <tr><td><?php echo $l_ip_dns2." : </td><td>".$conf["DNS2"];?></td></tr>
        </table>
        </fieldset>
        </td><td>
        <fieldset>
        <legend><?php echo $conf["EXTIF"].$l_extif_legend; ?></legend>
        <table>
                <tr><td><?php echo $l_ip_adr." : </td><td>".$conf["PUBLIC_IP"];?></td></tr>
                <tr><td><?php echo $l_ip_router." : </td><td>".$conf["GW"];?></td></tr>
        </table>
        </fieldset>
        </td><td>
        <fieldset>
        <legend><?php echo $conf["INTIF"].$l_intif_legend; ?></legend>
        <table>
                <tr><td><?php echo $l_ip_adr." : </td><td>".$conf["PRIVATE_IP"];?></td></tr>
        </table>
        </fieldset>
        </td></tr>
</table>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
        <tr><th><?php echo $l_dhcp_title;?></th></tr>
        <tr bgcolor="#FFCC66"><td><img src="/images/pix.gif" width="1" height="2"></td></tr>
</table>
<table width="100%" border=1 cellspacing=0 cellpadding=0>
<tr><td colspan="2" valign="middle" align="left">
<?
$dhcp_state=trim($conf["DHCP"]);
echo "<CENTER><H3>$l_dhcp_state : ${"l_DHCP_".$dhcp_state}</H3></CENTER>";
echo "<FORM action='$_SERVER[PHP_SELF]' method=POST>";
echo "<select name='choix'>";
echo "<option value=\"DHCP_Off\" ";if (!strcmp($dhcp_state,"off")) echo "selected";echo ">$l_DHCP_off";
echo "<option value=\"DHCP_On\" ";if (!strcmp($dhcp_state,"on")) echo "selected";echo ">$l_DHCP_on";
echo "</select>";
echo "<input type=submit value='$l_apply'>";
echo "<br>$l_DHCP_off_explain";
echo "</FORM>";
echo "</td></tr>";
if (strncmp($conf["DHCP"],"on",2) == 0) { require ('network2.php');}
else { echo "</TABLE>"; }
?>
</body>
</html>